Dynamics of the digestive tract in hens and ducks.
D000818:Animals; D002645:Chickens; D003426:Crop, Avian / Q000502:physiology; D003679:Deglutition / Q000502:physiology*; D004372:Ducks; D004571:Electrokymography; D004947:Esophagus / Q000502:physiology*; D008722:Methods; D009132:Muscles / Q000502:physiology; D010614:Pharynx / Q000502:physiology*; D010828:Physiology, Comparative; D013278:Stomach, Avian / Q000502:physiology*; D014059:Tongue / Q000502:physiology